Okra Pods Not Growing

We are wondering what would stop or hamper okra pods from growing. We have tall, green, large leaves on the plants. They are getting sunshine and enough water. The pods grow very slow, not like they are supposed to. We grew them last year and they did fine, but this year they're hardly growing.

Too much nitrogen fertilizer will prevent pods from setting and focuses more on producing foliage growth. Heat can also be a factor, making pollination more difficult. This can usually be remedied by adding more phosphorus to the soil, like bone meal, to offset the excess nitrogen and encourage more flower/pod growth.